Apparatus for washing gases.



R. F. PEARCE.

APPARATUS FOR WASHING GASES.

APPLICATION mu) JUNE 3. 1916.

1,200,974. Patented Oct. 10,1916.

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APPARATUS 130R WASHING GASES.

Specification of Letters Patent.

Patented Oct. 10, 1916.

Application filed June 3, 1916. Serial No. 101,521.

7 b all whom it may concern:

Be it known that I, RICHARD FRANCIS PEARCE, a subject of the King ofGreat Britain, residing at Rotherslade, Merrilocks Road, Blundellsands,Liverpool, England, have invented new and useful Improvements inApparatus for Washing Gases, of which the following is a specification.V

This invention relates to that method of collecting fume, flue dust andother matter suspended in gas, wherein the gas enters a receptacle ortank, containing water and a submerged filtering medium, through thewall of the said tank below the level of the water and the filter andrises up through the water and through the filter, the fume beingthereby separated from the gas and remaining in suspension in the wateras de scribed in the specification of former Letters Patent granted tome No. 1,028,487.

According to my invention instead of forcing the gas under pressurethrough the water and filtering material I make use of a fan orexhauster capable of maintaining a partial vacuum in the container abovethe water level whereby the gas will be sucked through the filteringmedium, the obstruction offered by the filter to the flow of the gasescausing an automatic distribution of the gases over the whole area ofthe filter. Further, as in practice the incoming gas forces the waterout of the inlets into the tank it follows that the fume or flue dust isliable to deposit therein, and I therefore furnish the inlet pipes withdevices by means of which they can be freed from deposited fume fromtime to time as required.

My invention will be readily understood by reference to the accompanyingdrawing which illustrates in sectional elevation an apparatus embodyingmy present improvements.

a indicates the tank and b the filtering medium mounted therein, andwhich, when the apparatus is in use, is below the level of the water inthe said tank.

0 is one of the gas inlet pipes which is represented as being free fromwater as in the case when the gas is flowing through it, and (Z one ofthe outlets, the said outlet being connected with a flue e from whichthe gas is designed to be exhausted by a fan or eX- hauster, andprovided, as shown, with a valve 7 by means of which it can be closedwhen desired;

Each of the inlet pipes c at the point of entry into the tank is madestraight and furnished with an extension 9 closed by a cap it. In thisextension is arranged a plunger 13, the rod la of which passes through astufiingbox 1n the cap h, so that the said plunger can be reciprocatedin order to discharge or push out from the inlet 0 any accumulation ofcondensed fumes.

To permit of reciprocating the plunger the latter is made tubular andinternally screwthreaded, and in a cross head Z carried on pillars m, mfixed to the cap 72,, is mounted a screw n which engages with thethreads in the tubular rod is in such a manner that, when the said screw11, is rotated by means of a hand-wheel 0 the plunger 2' will be movedlongitudinally in the outlet pipe 0.

By constructing the inlet pipe 0 with an extension as described it willbe seen, by reference to the drawing, that normally the plunger 71offers no obstruction to the free admission of the gas into theapparatus.

p is a gage for showing the height of the water in the tank and g, g aredrain cooks through which the water and fume can be discharged from timeto time as required. As shown in the drawing the bottom of the apparatusis formed with inclines as at r so that any deposited fume may gravitatetoward the said drain cocks.

Having now fully described and ascertained my said invention and themanner in which it is to be performed, I declare that what I claim is 1.An apparatus for washing gases com.- prising a washing tank providedwith a filtering screen and adapted to contain a cleaning fluid, aninlet pipe for the gases, connected to said tank beneath said screen andprovided with a cleaning arm, a piston mounted in said cleaning arm andprovided with a threaded stem, a screw carrying member secured to saidarm, a screw mounted in said member and engaging the threads of saidstem for operating said piston, and a gas outlet pipe also connected tosaid tank.

2. An apparatus for washing gases com prising a washing tank providedwith a filtering screen and adaptedto contain a cleaning fluid, an inletpipe for the gases connected to said ,ta-nk beneath saidiscreen anaproerating said piston, and a gas outlet pipe vided With a Cleaningarm,'a yoke shaped eonnected to said tank for Withdrawing the membercarried by said arm, a piston mountgases from the same.

ed in said. arm and provided with a hollow RICHARD FRANCIS PEARCE.internally threaded stem, a screw 'rotatably WVitnesses: mounted in saidyoke shaped member and FREDERICK WVILLIAM THOMAS,

' engaging the threads of said'stem' "for op- CHAs. HAMMOND.

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7 wu mz mmm"

